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Pacific

Poly Force Xtreme 16L

Polyester Gauge 16L 1.28 mm In production

Lab measurements for Pacific Poly Force Xtreme 16L, ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

218lb/in

lower = softer, kinder on the arm

Tension loss

40%

lower = stays where you strung it

Energy return

84%

higher = livelier, more free power

Spin potential

5.0

higher = more spin off the string bed

Ball bite

0.488COF

higher = grabs the ball harder

Snapback

0.098COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 218 lb/in · 86th pct

Stiffer than 86% of strings tested.

Tension loss 40 % · 66th pct

Sheds more tension than 66% of strings tested.

Energy return 84 % · 15th pct

Livelier than 15% of strings tested.

Spin potential 5.0 · 57th pct

More spin potential than 57% of strings tested.

Ball bite 0.488 COF · 73rd pct

Grips the ball harder than 73% of strings tested.

Snapback 0.098 COF · 61st pct

More string-on-string friction than 61% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

MSV Focus Evo 16 94% match Babolat Pro Hurricane Tour 17 94% match Signum Pro Tornado 17 (1.23) 94% match Wilson Ripspin 16 93% match Babolat Pro Hurricane Tour 16 92% match Signum Pro Hyperion 16 92% match

More from Pacific

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Poly Force Xtreme 16L against 789 strings Find the right string for me